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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 10
BKCSDE 27(10)
October 20, 2006 

Determination of Boron Isotopic Ratio by Using an Alpha Track Technique
Yong Joon Park*, Hyung Yeal Pyo, Kyuseok Song, Byoung Chul Song, Kwang Yong Jee, Won-Ho Kim
Alpha track analysis, Boron, Isotopic ratio, Enrichment, Multi-dot plate
The determination of the boron isotopic ratio in solutions was achieved by means of a solid state track detector by using an alpha track. The neutron flux was optimized by using a Cd-foil to find the optimum conditions for counting the number of alpha tracks on the selected solid detector caused by the (n, α) nuclear reaction of boron. The home-made multi-dot detector plate was utilized in this study to increase the reproducibility of the measurement by uniformly drying the boron solution within the marked circle area on the detector plate. The experimental results of this study verified that the 11B/10B isotopic ratio can be measured by observing the number of alpha tracks for different concentrated standard solutions with various isotopic compositions. This technique was applied to the determination of 10B enrichment factor in a biological sample for a boron neutron capture therapy.
1609 - 1612
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